#include <stdio.h>

#define XNAME(n) x ## n
#define PRINT_XN(n) printf("x" #n "=%d\n",x##n)

int main(void)
{
    int XNAME(1) = 14; // becomes int x1 = 14;
    int XNAME(2) = 20; // becomes int x2 = 20;
    PRINT_XN(1); // becomes printf("x1 = %d\n",x1);
    PRINT_XN(2); // becomes printf("x2 = %d\n",x2);
}
